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https://issues.apache.org/jira/browse/HBASE-22767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16948137#comment-16948137
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Hudson commented on HBASE-22767:
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Results for branch branch-2
[build #2317 on
builds.a.o|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/2317/]:
(x) *{color:red}-1 overall{color}*
----
details (if available):
(/) {color:green}+1 general checks{color}
-- For more information [see general
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/2317//General_Nightly_Build_Report/]
(x) {color:red}-1 jdk8 hadoop2 checks{color}
-- For more information [see jdk8 (hadoop2)
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/2317//JDK8_Nightly_Build_Report_(Hadoop2)/]
(x) {color:red}-1 jdk8 hadoop3 checks{color}
-- For more information [see jdk8 (hadoop3)
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/2317//JDK8_Nightly_Build_Report_(Hadoop3)/]
(/) {color:green}+1 source release artifact{color}
-- See build output for details.
(/) {color:green}+1 client integration test{color}
> System table RIT STUCK if their RSGroup has no highest version RSes
> -------------------------------------------------------------------
>
> Key: HBASE-22767
> URL: https://issues.apache.org/jira/browse/HBASE-22767
> Project: HBase
> Issue Type: Bug
> Components: rsgroup
> Reporter: Xiaolin Ha
> Assignee: Xiaolin Ha
> Priority: Major
> Fix For: 3.0.0, 2.3.0, 2.2.2
>
>
> AM chooses highest version region servers as participants for system tables,
> including META table. If system table group has no highest version region
> servers, then the reassignment of their regions will be always the BOGUS
> server defined in RSGroup.
> In our test environment using branch-2.2, we isolate system tables in a
> rsgroup containing only one server. And when upgrading RSs, we have met the
> problem that META is always assigned to the BOGUS server while the group
> server has already been online for a while. META RIT is stuck and can not be
> recovered by hbck2.
> I made a UT reproduce this problem, steps are:
> 1. add a group, move 1 server to it;
> 2. move meta table to the group;
> 3. restart the group server and downgrade its version;
> 4. meta rit stuck.
>
> ROOT cause is AM filters highest version RSs for system tables. So if we do
> not change the versions of system table group servers, but upgrade the
> versions of other group servers, then if there is reassignment for any system
> tables, such as balancer moving their regions, RIT STUCK!!
>
>
>
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